Colorado
Snakes in Archuleta County
7 species have been documented here, 2 of them venomous.
Venomous snakes in Archuleta County
Full guide & what to do if bitten →
Western RattlesnakeCrotalus oreganusVenomousHeavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
Prairie RattlesnakeCrotalus viridisVenomousHeavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
Every snake recorded in Archuleta County
Western Terrestrial Garter Snake
Thamnophis elegans
Harmless
Gopher Snake
Pituophis catenifer
Harmless
Smooth Greensnake
Opheodrys vernalis
Harmless
Western Milksnake
Lampropeltis gentilis
Harmless
Western Rattlesnake
Crotalus oreganus
Venomous
Prairie Rattlesnake
Crotalus viridis
Venomous
Black-necked Garter Snake
Thamnophis cyrtopsis
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.